At present, there are many types of polyurethane plastic raw materials commonly used, but they are mainly composed of the following materials.
A component (A liquid), which is made of polyether material, is added into the reaction vessel according to a certain amount, and the temperature is 100-115° C., dehydration is decompressed, and the temperature is reduced to 40-45° C. after 1.0-1.5 h. Adding diisocyanate material, the temperature rises slowly at a rate of 1~2°C per minute. When the temperature reaches 80~85°C, the heat preservation reaction takes about 2~2.5h. When it cools down to 50°C, it completes all reactions and is stored in the kettle.
B component (B liquid), that is, color paste manufacturing, the filler, color and polyether are stirred evenly, after grinding, the fineness is below 50Pμm, the moisture content is less than 0.1%, and the barrel is kept.
The rubber pellets are produced by using glue embryos, after pelletizing, smashing, and then sieving (3-4 mm mesh), and the moisture is stored in bags.
The main materials are as follows:
Polypropylene glycol ether: acid value
Polypropylene glycol ether: acid value
Polyglycerol Ether: Acid Value
Toluene diisocyanate (TDI): purity above 98%;
4,4 Diphenylmethane diisocyanate (MDI):: modified NCO content 28.5%, viscosity 60cp;
Methyl bismuth chlorobenzene glue (MOCA): baking point 100 ~ 104 °C, total chlorine 28%, free chlorine 0.1 or less;
Trimethylolpropane (TMP): Flash point 160°C, viscosity 100°C
Phenylmercuric acetate: industrial products, content ≥ 9.5%;
Lead octanoate: 42%;
Lead naphthalate: industrial products, P610%;
Zinc naphthalate: industrial products, content 10% to 12%;
Dibutyltin dilaurate: tin content 17% to 19%;
Preservative 264: industrial products, ignition point 68 ~ 70 °C;
Oleic acid: acid value 188~203, baking point 13.2°C, boiling point 286°C/13.3kp;
8-Hydroxyquine copper: industrial products, content 78.5%;
Dibutyl phthalate;
UV absorbers.
Folding Cast Aluminum Table Base
Supper strong and durable table bases to support a wide variety of table tops including wood, natural stone, grantte and marble. A large selection of powder coat colors for either indoor or outdoor resturant furniture use for a table base to match your decor and tables. We have the largest assortment of dining table bases made from cast iron and the best prices for table base anywhere for your business. Stable and durable, there metal table bases are great for booth indoor and outdoor use.
Cast aluminum table leg,Aluminum furniture leg,Table leg metal
Dongguan Smart Furniture Co.,Ltd , https://www.smtfurniture.com